VC++教学视频由孙鑫老师主讲并录制。更多技术，请登录孙鑫老师的个人网站http://www.sunxin.org/ 本文件为原书代码。-VC++ instructional videos recorded by the Sun Xin speaker and teacher. More technology, please visit Sun Xin teacher s personal website http://www.sunxin.org/ This document is t